Abstract:
:There are clinical situations in which it may be advantageous to monitor delayed type hypersensitivity (DTH) responses, an index of cell-mediated immunity, without exposing patients directly to the challenge antigens. For example, transplant patients may be at risk for becoming sensitized to donor antigens if injected with donor antigen during traditional skin tests. We describe an alternative method for human DTH testing, which involves the transfer of human peripheral blood mononuclear cells plus antigen into the pinnae or footpads of naive mice. This induces a measurable DTH-like swelling response, which we refer to as the "trans vivo DTH response." As proof of principle, we provide data obtained during trans vivo DTH studies with tetanus toxoid, cytomegalovirus (CMV) and alloantigens. In general, human T cells must be co-localized with antigen and human macrophages to produce swelling responses, and such responses are antigen-specific and require prior antigen sensitization. Not only does this assay offer a simple, reliable clinical monitoring device, but it also provides a model with which to study the in vivo mechanisms of human DTH responses.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Carrodeguas L,Orosz CG,Waldman WJ,Sedmak DD,Adams PW,VanBuskirk AMdoi
10.1016/s0198-8859(99)00002-6subject
Has Abstractpub_date
1999-08-01 00:00:00pages
640-51issue
8eissn
0198-8859issn
1879-1166pii
S0198-8859(99)00002-6journal_volume
60pub_type
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